Heap-based buffer overflow in Vim - CVE-2025-55157

Vulnerability identifier: #VU113785

CSH Severity: Medium

CVSS v4: 7.1 [CVSS:4.0/AV:L/AC:H/AT:N/PR:N/UI:A/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N]

CVE-ID: CVE-2025-55157

CWE-ID: CWE-122

Exploitation vector: Remote access

Exploit availability: No public exploit available

The vulnerability allows a remote attacker to execute arbitrary code on the target system.

The vulnerability exists due to a boundary error within the tuple_unref() function. A remote attacker can trick the victim into opening a specially crafted file, trigger a heap-based buffer overflow and execute arbitrary code on the target system.

Successful exploitation of this vulnerability may result in complete compromise of vulnerable system.

Vim
SUSE Linux Enterprise Server 12 SP5 LTSS Extended
SUSE Linux Enterprise Server 12
SUSE Linux Enterprise Server for SAP Applications 12
SUSE Linux Enterprise Server for SAP Applications 15
SUSE Linux Enterprise Server 15
SUSE Linux Enterprise Real Time 15
SUSE Linux Enterprise Desktop 15
SUSE Linux Enterprise Micro
SUSE Linux Enterprise Micro for Rancher
Desktop Applications Module
Basesystem Module
openSUSE Leap
vim-data
vim-data-common
gvim-debuginfo
gvim
vim
vim-debugsource
vim-debuginfo
vim-small-debuginfo
vim-small

Install updates from vendor's website.

Vim - update to 9.1.1400
vim-data - addressed in versions 9.1.1629-17.51.1, 9.1.1629-150500.20.33.1
vim-data-common - addressed in versions 9.1.1629-17.51.1, 9.1.1629-150000.5.78.1, 9.1.1629-150500.20.33.1
gvim-debuginfo - addressed in versions 9.1.1629-17.51.1, 9.1.1629-150500.20.33.1
gvim - addressed in versions 9.1.1629-17.51.1, 9.1.1629-150500.20.33.1
vim - addressed in versions 9.1.1629-17.51.1, 9.1.1629-150500.20.33.1
vim-debugsource - addressed in versions 9.1.1629-17.51.1, 9.1.1629-150000.5.78.1, 9.1.1629-150500.20.33.1
vim-debuginfo - addressed in versions 9.1.1629-17.51.1, 9.1.1629-150000.5.78.1, 9.1.1629-150500.20.33.1
vim-small-debuginfo - addressed in versions 9.1.1629-150000.5.78.1, 9.1.1629-150500.20.33.1
vim-small - addressed in versions 9.1.1629-150000.5.78.1, 9.1.1629-150500.20.33.1

• https://github.com/vim/vim/security/advisories/GHSA-3r4f-mm4w-wgg6
• https://github.com/vim/vim/commit/1307743697bbc46e1518abfea7f89caa95bcaf97
• https://github.com/vim/vim/releases/tag/v9.1.1400

• Use-after-free in Vim
• SUSE update for vim
• SUSE update for vim
• SUSE update for vim